For starters, [27050] is rad. This just cleans up some extra new lines that...

For starters, [27050] is rad. This just cleans up some extra new lines that were littered about, updates *some* of the inline docs (needs more), moves `wp.media.controller.ImageDetails` closer to its parent class, and de-dupes some code in `media-template.php`.

See #24409.


Built from https://develop.svn.wordpress.org/trunk@27051


git-svn-id: https://core.svn.wordpress.org/trunk@26925 1a063a9b-81f0-0310-95a4-ce76da25c4cd